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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 25 for “"displacement reactions"”.
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Nucleophilic displacement reactions of some carbohydrates in dimethyl sulphoxide
… have been prepared in order to study their reactions with sodium hydrogen carbonate in dimethyl sulphoxide. Similar reactions are known to convert acylic primary sulphonates and iodides to aldehydes but the sugar derivatives were observed to yield different products. Detosylation of the …
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Nucleophilic displacement reactions of some carbohydrates in dimethyl sulphoxide
… have been prepared in order to study their reactions with sodium hydrogen carbonate in dimethyl sulphoxide. Similar reactions are known to convert acylic primary sulphonates and iodides to aldehydes but the sugar derivatives were observed to yield different products. Detosylation of the …
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Intragranular Tungsten-Titanium Carbide Composite Ceramics via Gas-Solid Displacement Reactions
… the motivation for applying metallothermic displacement reactions, conducted through gaseous intermediates, to solid solution systems and serves as proof of concept for the demonstrated reaction process. Application of the studied reaction process to commercial …
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Towards smart molecular biosensors: Modulation of DNA strand displacement reactions with transcription factors for robust and tunable arsenic quantification
… DNA amplification, CRISPR-Cas and DNA strand displacement (DSD), have accelerated this transition and the ongoing COVID-19 pandemic has made biological testing ubiquitous. Nucleic acid diagnostics have been at the forefront of this trend, particularly for viral genomes, but increasingly other …
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Development of Fluorine-18 Halofluorination and Fluorine-18 Fluoride Ion Displacement Reactions for the Synthesis of Fluorine-18 Labeled Radiopharmaceuticals (Spiperone, Spiroperidol, N-Alkylation, Radioactivity)
… ('18)F halofluorination and ('18)F fluoride ion displacement reactions, have been developed to assess their potential for labeling molecules with the positron-emitting radionuclide fluorine-18 at the no-carrier-added level.
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Processing of Aluminum Alloys Containing Displacement Reaction Products
… were mixed using mechanical alloying. Exothermic displacement reactions could be initiated in the powders either by mechanical alloying alone or by heat treating the mechanically alloyed powders. Exponential relationships developed between the initiation time of the reaction and the mechanical …
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Synthesis of novel heterocyclic difluoro monomers via the chemistry of reissert compounds
… through the use of aromatic nucleophilic displacement reactions. Here, novel activated difluoro monomers were synthesized using the well established chemistry of Reissert compounds. Difunctional bis(Reissert compound)s were synthesized by the reaction of 4-(pfluorobenzylisoquinoline) and …
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Hydrothermal conversion of diatom frustules into barium titanate based replicas
… structures can be used. Using a series of gas displacement reactions, these frustules can be converted to other useful materials, such as magnesium oxide and titanium dioxide, while maintaining the features of the frustule template. In the current research, silicon dioxide frustules were …
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Regioselective chlorination of cellulose esters
… for appending new functionalities by displacement reactions. We have synthesized a library of cellulose ester derivatives by this chlorination/nucleophilic substitution strategy, including cationic and anionic cellulose ester derivatives. These cellulose ester derivatives possess great …
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Dynamic DNA Nanotechnology for Probing Single Nucleotide Variants and DNA Modifications
… thermodynamic and kinetic properties of strand displacement reactions and to circumvent the challenges of discriminating SNVs through finely tuned probes/assays.
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Metal seed deposition from organic solutions for subsequent electroless plating
… is based on spontaneous electrochemical displacement reactions. The more noble metal is reduced and deposited on the substrate surface; simultaneously the less noble metal is oxidized and dissolved into the organic solution. The organic media used in this process are commonly used in …
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Syntheses of selected mono- and di-esters of phosphoric acid and stability constants of their copper (II) complexes
… However, preparative difficulties and side reactions, due mainly to the susceptibility of the 4-nitrophenoxy moiety to nucleophilic displacement reactions, resulted in simplification of the target models to a pair of monoesters (R₃O)PO₃H₂ and a pair of diesters (R₃O)(R₄O)P(O)O⁻Na⁺ where R₃ = …
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Synthesis and properties of some 2,5-dihydrothiophene 1,1-dioxides
… including ionic additions, radical initiated reactions, Diels-Alder reactions, ietalation, condensation, and oxidation and reduction reactions. 2. For the first time the introduction of one halogen atom into the unsaturated five-membered cyclic sulfone without the isomerization of the double …
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Galvanic Displacement Across Single-Layer Graphene
… and engineering understanding of galvanic displacement reactions as buffered by a monolayer of graphene, specifically by investigating palladium deposition on graphene on a copper foil substrate via galvanic displacement between the copper and palladium (II) ions in solution. To understand …
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Synthesis and dynamics of [gamma]-alumina supported molybdenum subcarbonyls and model compounds
… synthetic routes to Mo(CO)₃(ads) via ligand displacement reactions using the molybdenum tricarbonyl complexes, Mo(CO)₃(CH₃CN)₃ and Mo(CO)₃(η⁶-C₆H₆). Molybdenum hexacarbonyl can be impregnated onto 𝛾-alumina using an inert hydrocarbon solvent such as pentane or benzene and these solvents are …
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